How many moles of NH4NO3 are in 23.7 grams of NH NO3?
A. 1 mol NH4NO3
B. 0.296 mol NH4NO3
C. 1.9 x 103 mol NH4NO3
D. 3.38 mol NH4NO3

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )